The Outer Layer of Cells Separating the Outside World from the Blastocoele

question 6

Multiple Choice

The outer layer of cells separating the outside world from the blastocoele is called the

• A) trophoblast.
• B) chorion.
• C) inner cell mass.
• D) zona pellucida.
• E) blastomere.

---

Definitions:

Rods

Photoreceptor cells in the retina of the eye that are responsible for vision in low light conditions.

Nonspectral Colors

Colors that do not appear in the visible spectrum and are perceived through the combination of two or more wavelengths, such as pink or brown.

Receptor Cells

Specialized cells that respond to specific types of energy (e.g., light, sound) and convert it into neural activity.

Retina

The light-sensitive layer of tissue at the back of the inner eye that converts light images into electrical signals sent to the brain.